I-Tech Company WBX-6200F-V - Manual (Page 56)

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When connecting a signal cable (also called ribbon
cable), Pin 1 of the cable should be aligned with Pin
1 of the connector on the motherboard. Pin 1 side of
the cable is identified by a color, usually red, stripe.
Pin 1 of the motherboard connector is identified by
the number 1 imprinted or an additional shading on
the board.